> Air Quality
Air Quality News Archive
- 4/5/05 - On April 5, 2005, the Washington, DC region’s
designation as nonattainment for fine particles (PM2.5) became effective.
The counties and cities included in the Washington, DC-MD-VA PM2.5
nonattainment area are the District of Columbia, Northern Virginia
(Fairfax, Arlington, Prince William, Loudoun Counties, and the cities
of Alexandria, Fairfax, Falls Church, Manassas and Manassas Park,
and the Maryland counties of Charles, Frederick, Montgomery and Prince
George’s. EPA still plans to issue guidance for implementing
the new standard. Visit the EPA
Fine Particle (PM 2.5) Designations page for more information.
- 3/31/05 - View
the first edition of the new MWAQC Newsletter - Air Currents.
up to be informed when future issues of Air Currents
- 1/12/05 - In January EPA approved the Washington
region’s Rate of Progress portion of the recently submitted
“Severe Area SIP.” The approval includes approval of the
contingency measures, transportation control measures, VMT offset
analysis, and control measures, including voluntary measures. EPA
expects to act on the attainment demonstration portion of the SIP
in the next month. View the Federal
Register notice of EPA’s proposed approval.
- 1/5/05 - On January 5, 2005 the Federal Register
published EPA’s final designations for the fine particle standard
which will become effective April 5, 2005. EPA designated the Washington,
DC-MD-VA region as nonattainment for the PM2.5 standard, which was
adopted in 1997. View the final rule
(PDF 350 KB) and a fact
sheet (PDF 30 KB) about fine particles. For further information,
see the EPA AirNow
- 12/17/04 - EPA designated the Washington, DC-MD-VA
region in nonattainment for fine particles (PM2.5) on December 17,
2004. For specific information about EPA’s designation announcement,
- 8/31/04 - SIP page
enhanced with latest updates on EPA approval process.
- 5/6/04 - COG posted the PowerPoint presentation
“Air Quality Forecasting Program and 2004 Ozone Season”
(1.5 MB PPT).
- 4/29/04 - COG released the updated brochure Improving
Air Quality: Metropolitan Washington Region - State Implementation
Plan (SIP) (234 KB PDF).
- 4/25/04 - Letter
to U.S. EPA with MWAQC's comments on the Proposed Interstate Air
- 4/15/04 - EPA designated the Washington, DC-MD-VA
region as in Moderate nonattainment for the 8-hour ozone standard.
The Washington region is required to submit a new air quality plan
(SIP) to EPA in 2007, and the region is required to meet the new standard
in 2010. View EPA’s designation announcement and rule (first
- 3/24/04 - View PowerPoint presentations from the
March 24 ICMA Webcast - Wind Energy: Opportunity for Local
- 2/19/04 - At its February 19 meeting, MWAQC approved the
latest revision of the Plan to Improve Air Quality in the
Washington, DC-MD-VA Region - State Implementation Plan
(SIP) “Severe Area SIP” Demonstrating Rate of Progress for 2002
and 2005 and the Carbon Monoxide Maintenance Plan and Revised
1990 Carbon Monoxide Base Year Emissions Inventory for the
Washington DC-MD-VA Nonattainment Area.
- Visit the SIP plan page for further
information and to view the document.
- Visit the CO plan page for further
information and to view the document.
- 8/19/03 - Visit the Air Quality
Data page for a list of Ozone Exceedances by Monitor Station for
- 7/14/03 - Visit the Air Quality
Data page for June, July, and August daily ozone concentration
- 5/22/03 - Updated
Complete List of Control Measures Considered by MWAQC for Use
in Severe Area State Implementation Plan (SIP) Spring 2003 (20 KB
- 5/22/03 - Analysis
of the Complete List of Control Measures Considered by MWAQC for
Use in Severe Area State Implementation Plan (SIP) Spring 2003 (709
KB PDF file)
- 1/24/03 - MWAQC comments
on EPA's proposed New Source Review changes.
- 1/24/03 - EPA reclassifies DC-MD-VA as a severe nonattainment
area for the 1-hour ozone standard. See the Federal
Register notice (104 KB PDF).
- 12/4/02 - MWAQC presentation outlining requirements for severe
- Mobile Emission/Speed Chart.
- Download the Periodic
Emission Inventory for 1999 for DC-MD-VA - (1.87 MB PDF
has adopted a public comment policy
that allows comment to MWAQC in person at the beginning of each meeting.